import java.awt.Color;
import java.awt.Point;
import java.awt.Graphics;

public interface PaintStorage {
	// add new point to existing polyline
	public void addPoint(Point ptNew);

	// clear all polylines with their belonging points and colors
	public void clear();

	// draw all polylines using the Graphics object g
	public void draw(Graphics g);

	// new polyline starts with point ptInit using color colLine
	public void newLine(Point ptInit, Color colLine);
}